...Jkaptive itself just presents the login page,checks the token and places netfilter rules. Telling apart ticketed from unticketed traffic is done through Linux' netfilter.
As no proxyserver is involved, jkaptive has no performance penalty, nor does it create problems with non-http traffic. Once the token is accepted, jkaptive is out of the way of any network packets completely.
For presenting the login page, jkaptive has a built-in webserver, so no additional webserver application is needed.
AOLserver is a multithreaded, Tcl-enabled, massively-scalable and extensible web server tuned for large scale, dynamic web sites. AOLserver also includes complete database integration and a dynamic page scripting language.
TclHttpd is a Web server implemented in pure Tcl. It works out of the box
as a Web server, but is really designed to be a Tcl application server. It
supports HTML+Tcl templates, and is extensible in a variety of ways.